Traditional Corn Bread

Name: Traditional Corn Bread
Yield: Makes 1 Loaf
Ingredients: 250 ml (9 fl oz/1 cup) buttermilk; 60 g (2¼ oz) butter, melted; 1 egg, lightly beaten; 150 g (5½ oz/1 cup) polenta; 2 teaspoons baking powder; ½ teaspoon bicarbonate of soda (baking soda); 2 tablespoons caster (superfine) sugar; 125 g (4½ oz/1 cup) plain (all-purpose) flour